\begin{table}[htbp]\centering
\caption{\textbf{GSS Descriptive Statistics 1993-2021}. Mean and standard deviation of GSS data (in parentheses) per survey year from 1993-2021.\label{tab:gssdesc2}}
\begin{tabular}{l*{15}{c}}
\hline\hline
                    &        1993&        1994&        1996&        1998&        2000&        2002&        2004&        2006&        2008&        2010&        2012&        2014&        2016&        2018&        2021\\
\hline
Environmental Spending&        0.63&        0.62&        0.63&        0.65&        0.64&        0.61&        0.63&        0.70&        0.67&        0.61&        0.57&        0.61&        0.64&        0.68&        0.70\\
                    &      (0.48)&      (0.48)&      (0.48)&      (0.48)&      (0.48)&      (0.49)&      (0.48)&      (0.46)&      (0.47)&      (0.49)&      (0.50)&      (0.49)&      (0.48)&      (0.47)&      (0.46)\\
[1em]
Confidence in Scientific Community&        0.42&        0.41&        0.43&        0.43&        0.45&        0.39&        0.42&        0.43&        0.41&        0.42&        0.42&        0.42&        0.42&        0.46&        0.51\\
                    &      (0.49)&      (0.49)&      (0.50)&      (0.50)&      (0.50)&      (0.49)&      (0.49)&      (0.49)&      (0.49)&      (0.49)&      (0.49)&      (0.49)&      (0.49)&      (0.50)&      (0.50)\\
[1em]
Republican          &        0.40&        0.41&        0.38&        0.38&        0.37&        0.35&        0.40&        0.35&        0.34&        0.33&        0.31&        0.32&        0.33&        0.36&        0.32\\
                    &      (0.49)&      (0.49)&      (0.49)&      (0.48)&      (0.48)&      (0.48)&      (0.49)&      (0.48)&      (0.48)&      (0.47)&      (0.46)&      (0.47)&      (0.47)&      (0.48)&      (0.47)\\
[1em]
Independent         &        0.12&        0.12&        0.15&        0.16&        0.18&        0.19&        0.13&        0.21&        0.15&        0.17&        0.18&        0.21&        0.17&        0.17&        0.20\\
                    &      (0.32)&      (0.33)&      (0.36)&      (0.37)&      (0.39)&      (0.39)&      (0.34)&      (0.41)&      (0.36)&      (0.37)&      (0.38)&      (0.41)&      (0.37)&      (0.38)&      (0.40)\\
[1em]
Democrat            &        0.48&        0.47&        0.47&        0.46&        0.45&        0.46&        0.47&        0.44&        0.50&        0.50&        0.51&        0.47&        0.50&        0.47&        0.48\\
                    &      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)\\
[1em]
Age                 &       44.77&       44.99&       44.16&       44.92&       44.77&       46.11&       45.68&       46.62&       47.58&       47.48&       47.89&       48.75&       48.20&       48.10&       52.13\\
                    &     (16.69)&     (16.21)&     (16.41)&     (16.79)&     (16.44)&     (17.02)&     (16.68)&     (16.92)&     (17.18)&     (17.78)&     (17.43)&     (17.20)&     (17.53)&     (17.71)&     (17.20)\\
[1em]
Female              &        0.57&        0.55&        0.54&        0.54&        0.54&        0.56&        0.52&        0.56&        0.55&        0.56&        0.54&        0.56&        0.55&        0.54&        0.56\\
                    &      (0.49)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)\\
[1em]
Less than HS        &        0.17&        0.15&        0.12&        0.13&        0.13&        0.13&        0.12&        0.15&        0.14&        0.14&        0.14&        0.13&        0.10&        0.11&        0.05\\
                    &      (0.37)&      (0.36)&      (0.33)&      (0.34)&      (0.34)&      (0.33)&      (0.33)&      (0.35)&      (0.35)&      (0.35)&      (0.35)&      (0.34)&      (0.31)&      (0.31)&      (0.22)\\
[1em]
HS Graduate         &        0.51&        0.54&        0.54&        0.55&        0.53&        0.54&        0.51&        0.49&        0.48&        0.49&        0.47&        0.50&        0.52&        0.48&        0.41\\
                    &      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.50)&      (0.49)\\
[1em]
Some College        &        0.07&        0.06&        0.07&        0.07&        0.08&        0.07&        0.09&        0.09&        0.09&        0.07&        0.08&        0.07&        0.07&        0.09&        0.09\\
                    &      (0.25)&      (0.23)&      (0.26)&      (0.26)&      (0.28)&      (0.25)&      (0.29)&      (0.29)&      (0.28)&      (0.25)&      (0.28)&      (0.26)&      (0.26)&      (0.28)&      (0.29)\\
[1em]
College Graduate    &        0.25&        0.26&        0.26&        0.24&        0.25&        0.27&        0.28&        0.28&        0.29&        0.31&        0.30&        0.30&        0.31&        0.32&        0.45\\
                    &      (0.44)&      (0.44)&      (0.44)&      (0.43)&      (0.44)&      (0.44)&      (0.45)&      (0.45)&      (0.45)&      (0.46)&      (0.46)&      (0.46)&      (0.46)&      (0.47)&      (0.50)\\
[1em]
White               &        0.84&        0.84&        0.82&        0.79&        0.80&        0.81&        0.81&        0.74&        0.78&        0.76&        0.74&        0.75&        0.73&        0.72&        0.80\\
                    &      (0.37)&      (0.37)&      (0.38)&      (0.40)&      (0.40)&      (0.39)&      (0.39)&      (0.44)&      (0.42)&      (0.43)&      (0.44)&      (0.43)&      (0.44)&      (0.45)&      (0.40)\\
\hline\hline
\end{tabular}
\end{table}
